A metal-based PCB board provided with a side wall with a tapered connector

Abstract

The utility model discloses a kind of metal-based PCBs with side wall with conical connecting piece, by opening through groove in core plate body, each first connecting piece is arranged at the both sides of metal base, first connecting groove corresponding with the position of each first connecting piece is opened in the side wall of through groove.And because the vertical section shape of first connecting piece is triangle, an inclined surface can be formed, when each first connecting piece of metal base is inserted into each first connecting groove, adhesive flows into each first connecting groove along the inclined surface.Not only the bonding effect between the side surface of metal base and the side wall of through groove is improved, but also the contact area between the side surface of metal base and the side wall of through groove is further increased, so that the connection between metal base and core plate body is more firm, and the connection strength between metal base and core plate body is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of PCB board processing technology, and in particular to a PCB board with a metal base having tapered connectors on the sidewalls. Background Technology

[0002] With the development of the times, the use of electronic products has gradually increased, and the number of PCB boards used has also increased accordingly. Electronic components on PCB boards generate heat when they are working. In order to ensure the normal operation of electronic components, metal substrates are usually embedded in the PCB board, which can dissipate heat from the PCB board.

[0003] The existing embedding process involves creating a through-slot on the PCB core board that is larger than the metal base, placing the metal base inside the slot, and using PP to bond the metal base to the PCB. This results in the metal base having four sides in contact with the PCB, and the area of ​​the intersecting surfaces being relatively small. Consequently, the connection between the PCB and the metal base is not strong enough, posing a risk of breakage at the metal base bonding surface during PCB manufacturing and customer use. This can lead to heat dissipation failure and fail to meet the product's heat dissipation requirements. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a PCB board with a metal base having tapered connectors on the sidewalls.

[0005] The technical solution of this utility model is as follows: A PCB board with a metal base having tapered connectors on the sidewalls includes: a metal base and a core board body. A through slot is formed on the core board body. The metal base is disposed in the through slot. First connectors are provided on both sides of the metal base. The vertical cross-sectional shape of the first connectors is triangular. A first connecting groove with the same shape as the first connector is formed on the sidewall of the through slot. The first connectors are located in the first connecting groove and are spaced apart from the sidewalls of the first connecting groove. The through slot and the first connecting groove are filled with adhesive.

[0006] Preferably, the through groove is located at the exact center of the core plate, and the metal base is disposed in the middle of the through groove.

[0007] Preferably, a second connector is provided at both ends of the metal base, the vertical cross-sectional shape of the second connector is triangular, and a second connecting groove with a shape corresponding to the second connector is provided on the side wall of the through groove, and the adhesive is filled in each second connecting groove and the through groove.

[0008] Preferably, the apexes of the first connector and the second connector are located at the midpoint of the line connecting the top and bottom surfaces of the metal base.

[0009] Preferably, the vertical cross-sectional shape of both the first connector and the second connector is an isosceles triangle.

[0010] Preferably, the vertical distance from the vertex of each of the first connectors and each of the second connectors to one side or one end of the metal base is 0.1mm-0.25mm.

[0011] Preferably, the height of the first connector and the second connector is the same as the height of the core plate, and the two endpoints of the bottom edge of each of the first connector and the second connector are respectively connected to the intersection of the top surface and the bottom surface of the metal base.

[0012] Preferably, the first connector is the same length as one side of the metal base.

[0013] Preferably, the second connector is the same length as one end of the metal base.

[0014] Preferably, the perimeter of the metal base is divided into ten equal segments, and a first connector and a second connector are provided at one end or one side of the metal base at an even number of segments. The first connecting groove and the second connecting groove are formed on the side wall of the through groove at the positions corresponding to the positions of the first connector and the second connector.

[0015] According to the above-described solution, the beneficial effects of this utility model are as follows: by opening a through groove in the core board body, providing a first connector on each side of the metal base, and opening a first connecting groove on the side wall of the through groove corresponding to the position of each first connector, and because the vertical cross-sectional shape of the first connector is triangular, it can form an inclined surface. When each first connector of the metal base is inserted into each first connecting groove, the adhesive flows into each first connecting groove along the inclined surface. This not only improves the bonding effect between the side of the metal base and the side wall of the through groove, but also further increases the contact area between the side of the metal base and the side wall of the through groove, making the connection between the metal base and the core board body more solid and greatly improving the connection strength between the metal base and the core board body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a PCB board with a metal base and tapered connectors on the sidewalls. Figure 2 This is a top view of a PCB board with a metal base and tapered connectors on the sidewalls. Figure 3 This is a schematic cross-sectional view of a PCB board with a metal base and tapered connectors on the sidewalls. Figure 4 This is a schematic cross-sectional view of a PCB board with a metal base having tapered connectors on the sidewalls.

[0017] In the figure, 10 is the core board body; 11 is the through groove; 12 is the core board; 13 is the copper base; 14 is the prepreg; 15 is the first connecting groove; 16 is the second connecting groove; 20 is the metal base; 23 is the first connector; 24 is the second connector; and 30 is the adhesive. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1

[0019] like Figures 1-4 As shown, a PCB board with a metal base having tapered connectors on the sidewalls includes a metal base 20 and a core board body 10. The core board body 10 is composed of multiple core boards 12, a copper base 13, and a prepreg 14. The top and bottom surfaces of each core board 12 are laminated with the copper base 13 to form a copper-clad laminate. The copper-clad laminates are bonded together with the prepreg 14 to form a multi-layer structure core board body 10. The core board body 10 has a through slot 11, and the metal base 20 is disposed in the middle of the through slot 11 to facilitate the insertion of the metal base 20 into the through slot 11 and reduce the installation difficulty of the metal base 20.

[0020] like Figures 2 to 4 As shown, first connectors 23 are respectively provided on both sides of the metal base 20, and first connecting grooves 15 are opened on the side wall of the through groove 11 at the positions of the first connectors 23. During installation, after each first connector 23 is inserted into its corresponding first connecting groove 15, there are gaps between the side wall of the first connector 23 and the first connecting groove 15, and between the side wall of the metal base 20 and the side wall of the through groove 11. Adhesive 30 is injected and filled into the gaps between the side wall of the first connector 23 and the first connecting groove 15, and between the side wall of the metal base 20 and the side wall of the through groove 11. It should be noted that the vertical cross-section of the first connector 23 is triangular, so that the first connector 23 has two inclined surfaces, which can increase the flow effect of the adhesive 30, thereby better filling the gap between the first connector 23 and the first connecting groove 15 with the adhesive 30. The adhesive 30 is PP adhesive, that is, polypropylene special plastic adhesive, and the prepreg 14 is PP adhesive. After the adhesive 30 has cured, the metal base 20 is firmly fixed in the through groove 11 and each of the first connecting grooves 15. This structure not only facilitates the injection of the adhesive 30, but also increases the bonding area and adhesion between the metal base 20 and the core board 10 by utilizing the cooperation between the first connector 23 and each of the first connecting grooves 15. This significantly improves the bonding strength between the core board 10 and the metal base 20, facilitating subsequent processing.

[0021] In this embodiment, as Figures 2 to 4As shown, the through slot 11 is located at the very center of the core plate 10. This arrangement allows the metal base 20 in the through slot 11 to uniformly absorb the heat generated by the surrounding components. The metal base 20 is preferably made of copper, thereby significantly improving the overall heat dissipation efficiency.

[0022] In this embodiment, as Figure 2 and Figure 3 As shown, multiple second connectors 24 are provided at both ends of the metal base 20. Correspondingly, second connecting grooves 16 are formed on the side wall of the through groove 11, with positions corresponding to the positions of each second connector 24. During installation, each first connector 23 and each second connector 24 is inserted into its corresponding first connecting groove 15 and second connecting groove 16, respectively. There is a gap between each second connector 24 and its corresponding second connecting groove 16. Adhesive 30 is injected into the through groove 11, each first connecting groove 15, and each second connecting groove 16. After the adhesive 30 cures, the metal base 20 is fixed in the through groove 11. This further increases the contact area between the side of the metal base 20 and the core board 10.

[0023] In this embodiment, as Figure 3 and Figure 4 As shown, the vertical cross-sections of the first connector 23 and the second connector 24 are isosceles triangles, and the vertices of the first connector 23 and the second connector 24 are respectively aligned with the middle of the first connecting groove 15 and the second connecting groove 16, so that the glue flows along the inclined surface of the first connector 23 into the middle of the first connecting groove 15 and the second connecting groove 16, thereby improving the bonding effect.

[0024] In this embodiment, the vertical distance from the vertex of each of the first connectors 23 and the second connectors 24 to one side or one end of the metal base 20 is 0.1mm-0.25mm, that is, the width of the first connector 23 and the second connector 24 is 0.1mm-0.25mm. The above-mentioned vertical distance refers to the distance in the vertical direction from the vertex of the first connector 23 or the second connector 24 to the outer surface of one side or one end of the metal base 20. The width of the first connector 23 and the second connector 24 can be any value between 0.1mm and 0.25mm. With the above settings, the processing of the second connector 24 and the first connector 23 is relatively simple, and the cutting tool can simultaneously cut and shape them in one up and down motion.

[0025] In this embodiment, as Figure 2As shown, the length between the top and bottom surfaces of the metal base 20, i.e., the two sides where the wide side is located, is the height. The bottom edge lengths of the first connector 23 and the second connector 24 are equal to the height of the metal base 20. The two endpoints of the bottom edges of the first connector 23 and the second connector 24 are connected to the corner points of the top and bottom surfaces of the metal base 20, respectively. The vertices of the first connector 23 and the second connector 24 are located at half the height of the metal base 20. The two ends of the metal base 20 are the two ends with the long side, and the length of the second connector 24 is the same as the length of the long side of the metal base 20. The two sides of the metal base 20 are the two sides with the wide side, and the length of the second connector is the same as the length of the wide side of the metal base 20. Through the above arrangement, the processing flow of the metal base 20 and the first connector 23 and the second connector 24 can be simplified, and the contact area between the metal base 20 and the core plate 10 can be increased. Example 2

[0026] Unlike Embodiment 1, the perimeter of the metal base 20 is divided into ten equal segments. A first connector 23 and a second connector 24 are provided at one end or one side of the metal base 20, located at even-numbered segments. That is, multiple first connectors 23 and second connectors 24 are spaced around the metal base 20 and connected to one side or one end of the metal base 20. A first connecting groove 15 and a second connecting groove 16 are formed on the sidewall of the through groove 11 corresponding to the first connectors 23 and second connectors 24. During installation, each first connector 23 and each second connector 24 is inserted into its corresponding first connecting groove 15 and second connecting groove 16, and the metal base 20 is fixed to the through groove 11 using adhesive 30. Through this arrangement, the first connectors 23 and second connectors 24, which were originally of equal width and length to the metal base 20, are divided into multiple independent first connectors 23 and second connectors 24, thereby enabling heat to be dissipated separately and preventing heat accumulation within the entire area of ​​the first connectors 23 and second connectors 24.

[0027] The remaining structures are the same as those in Example 1, so the remaining structures will not be described in detail.

[0028] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0029] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A PCB board with a metal base and tapered connectors on the sidewalls, characterized in that, include: A metal base (20) and a core board (10) are provided. A through groove (11) is provided on the core board (10). The metal base (20) is disposed in the through groove (11). A first connector (23) is provided on both sides of the metal base (20). The vertical cross-section of the first connector (23) is triangular. A first connecting groove (15) with the same shape as the first connector (23) is provided on the side wall of the through groove (11). The first connector (23) is located in the first connecting groove (15) and is spaced apart from the side wall of the first connecting groove (15). The through groove (11) and the first connecting groove (15) are filled with adhesive (30).

2. A PCB board with a metal base and tapered connectors on the sidewalls according to claim 1, characterized in that, The through groove (11) is located at the center of the core plate (10), and the metal base (20) is located in the middle of the through groove (11).

3. A PCB board with a metal base and tapered connectors on the sidewalls according to claim 2, characterized in that, The metal base (20) is provided with a second connector (24) at both ends. The vertical cross-sectional shape of the second connector (24) is triangular. The side wall of the through groove (11) is provided with a second connecting groove (16) with a shape corresponding to the second connector (24). Each second connecting groove (16) and the through groove (11) are filled with the adhesive (30).

4. A PCB board with a metal base and tapered connectors on the sidewalls according to claim 3, characterized in that, The apex of the first connector (23) and the second connector (24) is located at the midpoint of the line connecting the top and bottom surfaces of the metal base (20).

5. A PCB board with a metal base having tapered connectors on the sidewalls according to claim 3, characterized in that, The vertical cross-sectional shape of the first connector (23) and the second connector (24) is an isosceles triangle.

6. A PCB board with a metal base having tapered connectors on the sidewalls according to any one of claims 3-5, characterized in that, The vertical distance from the vertex of each of the first connectors (23) and each of the second connectors (24) to one side or one end of the metal base (20) is 0.1mm-0.25mm.

7. A PCB board with a metal base having tapered connectors on the sidewalls according to any one of claims 3-5, characterized in that, The height of the first connector (23) and the second connector (24) is the same as the height of the core plate (10), and the two endpoints of the bottom edge of each of the first connector (23) and the second connector (24) are respectively connected to the intersection of the top surface and the bottom surface of the metal base (20).

8. A PCB board with a metal base having tapered connectors on the sidewalls according to any one of claims 3-5, characterized in that, The first connector (23) is the same length as one side of the metal base (20).

9. A PCB board with a metal base having tapered connectors on the sidewalls according to any one of claims 3-5, characterized in that, The second connector (24) is the same length as one end of the metal base (20).

10. A PCB board with a metal base having tapered connectors on the sidewalls according to any one of claims 3-5, characterized in that, The perimeter of the metal base (20) is divided into ten equal segments. A first connector (23) and a second connector (24) are provided at one end or one side of the metal base (20) at an even number of segments. The first connecting groove (15) and the second connecting groove (16) are opened on the side wall of the through groove (11) at the position corresponding to the first connector (23) and the second connector (24).

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